The Basic examination on the development of long-life control rod for prototype reactor Monju; Evaluation of the porous-plug properties in liquid sodium

Yoshida, Eiichi; Sakurai, Tadashi*; Shibahara, Itaru

Sodium-bond double porous-plug is one of the candidates in development of the long-life life control rod for prototype reactor MONJU. Gas hold pressure and sodium penetration pressure of the porous-plug in liquid sodium are an important factor which determines the filling up of sodium into porous-plug and the gas plenum length in control rod pin. In this study, the fundamental characteristic of porous-plug was clarified by experiment in high temperature sodium. Moreover, the characteristic equation of design for a porous-plug was evaluated based on the obtained data.